[CLJ-787] transient blows up when passed a vector created by subvec Created: 03/May/11 Updated: 12/Apr/13 |
|
| Status: | Open |
| Project: | Clojure |
| Component/s: | None |
| Affects Version/s: | Backlog |
| Fix Version/s: | Release 1.6 |
| Type: | Defect | Priority: | Minor |
| Reporter: | Alexander Redington | Assignee: | Unassigned |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | None | ||
| Approval: | Vetted |
| Description |
|
Subvectors created with subvec from a PersistentVector cannot be made transient: user=> (transient (subvec [1 2 3 4] 2)) ClassCastException clojure.lang.APersistentVector$SubVector cannot be cast to clojure.lang.IEditableCollection clojure.core/transient (core.clj:2864) |
| Comments |
| Comment by Stuart Sierra [ 31/May/11 9:28 AM ] |
|
Confirmed. APersistentVector$SubVector does not implement IEditableCollection. The current implementation of TransientVector depends on implementation details of PersistentVector, so it is not a trivial fix. The simplest fix might be to implement IEditableCollection.asTransient in SubVector by creating a new PersistentVector, but I do not know the performance implications. |